11. The Nine Situations
This end, according to Tu Mu, is best attained by remaining on the defensive, and avoiding battle. Cf. supra, ss. 11.
As Tu Mu says, the object is to guard against two possible contingencies: "(1) the desertion of our own troops; (2) a sudden attack on the part of the enemy." Cf. VII. ss. 17. Mei Yao-ch`en says: "On the march, the regiments should be in close touch; in an encampment, there should be continuity between the fortifications."